A biphasic system, consisting of methyl isobutyl ketone and H 2 O, has been achieved for a highly integrated one-pot catalytic transformation and delignification process of lignocellulosic biomass. Using SO 3 H-functionalized ionic liquids as catalysts, 85.8% of bagasse can be fractionated into 71.4% water-soluble chemicals at 76.3% lignin extraction ratio, under the optimized conditions. The practicability of this biphasic system for other typical biomass sources has also been tested with high efficiency, viz., 79.6 to 91.9% lignin extraction ratio of corncob, corn stalk, rice husk, and rice straw with 56.6 to 72.8% water-soluble chemicals yield at 64.8 to 81.3% feed conversion.
Pt/N-doped carbons with extra framework magnesium catalysts exhibit high activity and selectivity in glycerol oxidation to tartronic acid under base-free conditions.
An eco‐friendly catalytic system consisted of dihydric phosphate (H2PO4—) catalyst and a methyl isobutyl ketone (MIBK)/H2O biphasic solvent has been constructed to produce 5‐hydroxymethylfurfural (HMF) from sucrose, a cheaper and more widely available feedstock than fructose. The effects of reaction conditions, viz., catalyst dosage, reaction temperature, and reaction time, on this dehydration reaction have been investigated systematically, affording more than 70% of HMF yield under the optimum conditions. This environmentally friendly system is also broadly substrate‐tolerant, high concentration of sucrose (86%), scalable catalytic system (scaled up 10 times), and sugarcane juice also give 62.5%, 70.1%, and 70.7% of HMF yield, respectively. Moreover, the function of H2PO4— containing system for isomerization of glucose into fructose has been confirmed; and the dehydration reaction has been proposed to proceed through the catalytic hydrolysis of sucrose into glucose and fructose by protons (H+), followed by the isomerization of glucose into fructose by hydrogen phosphate ions (HPO42−), and the dehydration of fructose into HMF by protons (H+), which are all from the dissociation of H2PO4— ions. Readily available and eco‐friendly catalyst, abundantly available feedstock, and simple reaction conditions could mark this process promising for HMF production in industry.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.